20818611

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{223}}^1$

素因数の和:304

約数の個数: 48

約数和(自身を含む): 35223552

約数和(自身を除く): 14404941

約数列:

[1, 3, 9, 11, 23, 33, 41, 69, 99, 123, 207, 223, 253, 369, 451, 669, 759, 943, 1353, 2007, 2277, 2453, 2829, 4059, 5129, 7359, 8487, 9143, 10373, 15387, 22077, 27429, 31119, 46161, 56419, 82287, 93357, 100573, 169257, 210289, 301719, 507771, 630867, 905157, 1892601, 2313179, 6939537, 20818611]

約数ペア:

[(1, 20818611), (3, 6939537), (9, 2313179), (11, 1892601), (23, 905157), (33, 630867), (41, 507771), (69, 301719), (99, 210289), (123, 169257), (207, 100573), (223, 93357), (253, 82287), (369, 56419), (451, 46161), (669, 31119), (759, 27429), (943, 22077), (1353, 15387), (2007, 10373), (2277, 9143), (2453, 8487), (2829, 7359), (4059, 5129)]